Jig.



G. W. KELLER & & A. BRASSINGTON.

JIG.

APPLICATION FILED 00T. 29, 1910.

Patented J an. 9, 1912.

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G. W. KELLER & C. 6v A. BRASSINGTON.

` JIG.

APPLICATION FILED OGT. 29, 1910.

Patented J`aI1.9', 1912.

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GEORGE W. KELLER, CHARLES BRASSINGTON, AND ABRAHAM BRASSINGTON, OF ARISTES, PENNSYLVANIA.

JIGr.

Specification of Letters Patent.

Patented Jan. 9,1912.

Application led October 29, 1910. i Serial No. 589,772.

To all whom 'it may concern.'

Be it known that we, GEORGE W. KELLER,

' Jigs, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved coal washing jig for separating slate from` coal or other materials having different specific gravities.

The primary object of the invention resides in the provision of a slate discharging gate hingedly mounted in one end of an oscillatory receptacle, and means whereby said gate is automatically opened under the weight of the material thereon, said means being adjustable to vary the required weight for the opening of the gate.

A further object of the invention is to provide an oscillatory receptacle and a gate mounted in one end thereof and normally closed by means of a weight, said weight being adjustable whereby the gate is opened under the varying weight of material thereon.

With these and other objects in view, the invention consists of the novel features of construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in whichy Figure 1 is a vertical longitudinal section of a coal washing jig embodying our improvements; Fig. 2 is a top plan view; Fig. 3 is a section taken on the line 3-3 of Fig. 1 and' Fig. 4 is a detail perspective view of the gate and the parts associated-therewith.

Referring in detail to the drawing 5 designates a tank in which the reciprocatory receptacle' is mounted. This tank is preferably rectangular in form and is provided with bearings 8 upon its upper longitudinal edges. In these bearings the transverse rods 9 are mounted and hanger arms 10` are loosely engaged upon said rods at one of their ends and upon similar rods 11 mounted in the bearings 12 on the upper longitudinal edges of the receptacle 6. A crank shaft 13 is mounted in the bearings 14 on the forward end of the water tank 5 and upon one end of this shaft ya band wheel 15 is secured which is adapted to be connected by means of the driving belt 16 to a motor or any other suitable source of power. The intermediate crank portion 13 of the shaft is connected by means of the links 17 with the rod 11 which is arranged upon the forward end of the receptacle 6.

It will be observed upon reference to Fig. 1 that in the normal position of the receptacle 6, the hangers 10 which connect the forward end thereof and the supporting rod 9 are inclined slightly in a forward direction, thus supporting the forward end of the receptacle at a higher elevation than the rear end thereof. By thus mounting the receptacle, a greater drop of the front end of the receptacle is secured than of the rear end thereof thus eecting the proper separation of the slate and coal. This is necessary as the front end of the receptacle contains a greater quantity of slate and coal than the rear end thereof. It consequently requires a greater agitation of the front end of the receptacle to move this heavier body of material than it does in the `rear end where the coal is lighter. As the receptacle is oscillated, the coal by` the action of the water is floated while the heavy slate moves forwardly.V It has heretofore been a diticult matter to discharge the slate from the receptacle fast enough so as to prevent discharge of the coal with the slate. This diiiiculty is overcome by the manner in which we mount the receptacle and the proper agitation of the same is obtained so as to effect themovement of the slate at the right time, or when the coal is floated.

The receptacle 6 is provided with a foraminous bottom plate 18, the rear end of which is curved as shown at 18, thus lessening the depth of the receptacle at this end. The coal is fed into the receptacle from a suitable hopper at the rear end thereof and is first separated at this,y point, the action of the water in the oscillation of the receptacle floating the coal while the heavier particles of slate drop upon the bottom plate 18'. rIhis slate is moved over the bottom of the receptacle in the manner above described toward the slate gate 19 which is hinged upon the lower longitudinal edges of the receptacle at the forward end thereof. The sides of the receptacle are rigidly secured together and braced by means of the traps'- verse bars 20. Upon the upper edges of the sides of the receptacle a shaft 2l is mounted having a crank 21 on Yeach end thereof. Rods 22 connect the cranked endsv of this shaft with the ends of the slate gate 19. An arm 22 is rigidly fix'ed upon the center of the crank shaft 21 and extends rearwardly thereof. Upon the extremity of this arm a rack 22 is formed and a V- shaped member 23 is pivotally mounted upon said rack; The connecting portion of said member at the juncture of the arms 24 and 25 is bifurcated to receive the rack 22 and the arm 24 is formed into a lever which carries a spring pressed dog 26 for engagement with the teeth of the rack. The other .arm 25 has removably fixed thereon a weight 27. This weight tends to rotate the crank shaft and elevate the cranked ends thereof, thus holding the slate gate 19 closed under normal conditions. The gate 19 at its hinged edge is curved as shown at 19 so that the water may freely enter through the perforations thereof, said gate being foraminated in a similar manner to the bottom plate of the receptacle. It will be obvious that by adjusting the member 23 upon the arm 22 so as to move the weighted arm 25 of said member forwardly or rearwardly, the amount of material which must be deposited upon said gate to open the same may be varied.

In the operation ofthe machine, water may be supplied to the tank 5 from any suitable source until it reaches a level about midway between the upper and lower longitudinal edges of the sides of the receptacle 6. As the receptacle is oscillated, this water is agitated so that it surges within the tank through the perforations of the bottom plate 18. As the coal andjslate are deposited in the rear end of the receptacle, the coal is floated by the jets of water which enter through the perforations in the rear curved end of the bottom plate which strikes the water with considerable force in the oscillatory movement of the receptacle.V When the forward end of the receptacle has been elevated, the sudden downward and rearward movement of the same after the crank shaft 13 passes its center causes the slate which has dropped upon the bottom plate to move forwardly over the same toward the slate gate 19. The front edge of this gate engages the forward cross bar 20 which is ar ranged between the sides of the receptacle and revents any escape of the slate until a sulcient quantity has accumulated thereon toV actuate the gate. The weight 26 and the arm on which it is mounted are finally overcome by the weight of the slate andthe gate 19 opens. By providing the curved edge portion on the slate gate, the water may freely flow through the perforations thereof and thoroughly wash out the slate as soon as the gate opens while the coal is held up or floated so that it is kept entirely separated fro-m the slateand is not discharged `from the receptacle by the opening of the gate.

F rom the above it is thought that the con struction and operation of our improved will be readily understood.

By providing the weight supported gate and the means for adjusting the weight, the gate may be caused to drop bythe accumulation of varying amounts of slate thereon.

l/Vhile we have described our machine as particularly adapted for the washingof coal and the separation of the slate from the same, it will also be apparent that the machine may be utilized for t-he separation of ores and various other materials having different speciic gravities.

The machine may be operated witha mim-- imum expenditure of power and is very ellicient in practical operat-ion.

Owing' to the fact that but few parts are utilized in its construction it will also be evident that the jig may be constructed at a comparatively low cost.

Vhile we have shown and described the preferred construction and arrangement of the various parts, it will b e obvious that the machine is susceptible of considerable modification wit-hout departing from the essential feature or sacrificing any of the advantages thereof.

Having thus described the is claimed is i In a machineof the character described, the combination with a receptacle, of a transversely disposed gate hingedly mount'- ed at one of its edges upon the bottom of said receptacle and at one end thereof, a shaft rotatably mounted upon said rece tacle having a crank arm formed on each en ,rods connected to the ends of said arms and to the opposite ends of said gate at its free edge, an arm rigidly fixed centrally upon said shaft and normally disposed in a hori# zontal plane, said arm having'a rack formed on one end, a lever pivotally mounted upon said rack and having an arm integrally formed therewith extending substantially at a right angle to the lever, said lever carrying a spring actuated dog for engagement With the teeth of the rack, a Weight on our signatures in the presence of tWo Wit- 10 the arm of said lever, the angular adjustnesse's.

ment of the lever arm With relation to said horizontal arm determining the Weight nec- SLSIITON 5 essary to move the gate t0- its open posi- ABRAHAM BRASSINGTO tion, and means for adjusting the Weight on the lever arm to further control the move- Witnesses: ment of said gate. JAMES B. CLEWS,

In testimony Whereoi:1 We hereunto aix WILLIAM FLANAGAN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

